energy
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energy
In physics, the ability to do work. In everyday language, often used as a synonym for electricity, heat, or fuel.
Wir müssen Energie sparen, um die Kosten zu senken und die Umwelt zu schützen.
We need to save energy in order to reduce costs and protect the environment.
You can tell from context whether physical or personal energy is meant. Technical or economic topics like 'Kosten' (costs), 'sparen' (to save), or 'erneuerbar' (renewable) point to the first meaning, while personal topics like 'Müdigkeit' (tiredness) or 'Motivation' (motivation) point to the second.
Die Fabrik benötigt viel elektrische Energie.
The factory needs a lot of electrical energy.
In technical and physical contexts, 'Energie' (energy) is often combined with verbs like 'sparen' (to save), 'verbrauchen' (to consume), 'erzeugen' (to generate), or 'liefern' (to supply).
Moderne Kühlschränke verbrauchen deutlich weniger Energie als alte Modelle.
Modern refrigerators use significantly less energy than old models.
The word 'Energie' (energy) is a central part of the very common term 'erneuerbare Energien' (renewable energies), which refers to environmentally friendly energy sources such as sun, wind, and water.
Der Ausbau erneuerbarer Energien ist ein wichtiges politisches Ziel.
The expansion of renewable energies is an important political goal.
When it comes to personal strength, 'Energie' (energy) is often used in fixed expressions. Typical ones are: 'Energie tanken' (to recharge one's batteries), 'voller Energie sein' (to be full of energy), or 'seine Energie in etwas stecken' (to put one's energy into something).
Nach einem langen Spaziergang fühle ich mich wieder voller Energie.
After a long walk, I feel full of energy again.
work
'die Arbeit' and 'die Energie' are connected when it comes to power and effort. In physics, work is a specific kind of transferred energy. In everyday language, however, 'Arbeit' usually means an activity or the effort needed for something. 'Energie', on the other hand, means the power that you have or that something provides, for example electricity or personal strength. Learners may confuse the words because you need energy for work. In practical terms: 'die Arbeit' is what is done or what requires effort; 'die Energie' is the power for it.
Nach dem Spaziergang im Park habe ich wieder mehr Energie zum Lernen.
After the walk in the park, I have more energy for studying again.
Die Reparatur im Haus war viel Arbeit, aber jetzt ist alles fertig.
The repair work in the house was a lot of work, but now everything is finished.